Development of novel solid nitride ion conductor

在炼铁的情况下，控制溶解在铁水中的氧气、氢气和氮气的含量是非常重要的问题，因为这些直接影响所制造的铁的质量。然而，在这些气体中，目前还不可能对铁水中的氮气进行传感，因为还没有发现能够使我们测量氮气量的氮化物离子导电材料。结果表明，在低于1000 ℃时，我们不能清楚地观察到Si_3N_4和Ga_3N_4中的氮化物离子导电，并且我们发现，在高于1000 ℃时，可以观察到氮化物导电的表达

In the case of iron manufacturing, it is very important issue to control the contained amount of oxygen gas, hydrogen gas and nitrogen gas solved in the molten iron since these directly affect the quality of the manufactured iron. However, among these gases, the sensing of nitrogen gases in the molten iron is impossible at present since the nitride ion conducting material, which enables us to measure the nitrogen gas amount, has not been found. In this work, we tried to find the novel nitride ion conductor in order to develop nitrogen gas sensor. As a result, we could not clearly observe the nitride ion conduction in Si3N4 and Ga3N4 below 1000oC, and we found that the expression of the nitride conduction might be observed at higher temperature than 1000oC